1 /* cp.c -- file copying (main routines)
2 Copyright (C) 1989-2013 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
17 Written by Torbjorn Granlund, David MacKenzie, and Jim Meyering. */
21 #include <sys/types.h>
23 #include <selinux/selinux.h>
27 #include "backupfile.h"
31 #include "filenamecat.h"
32 #include "ignore-value.h"
34 #include "stat-time.h"
39 # define lchown(name, uid, gid) chown (name, uid, gid)
42 #define ASSIGN_BASENAME_STRDUPA(Dest, File_name) \
46 ASSIGN_STRDUPA (tmp_abns_, (File_name)); \
47 Dest = last_component (tmp_abns_); \
48 strip_trailing_slashes (Dest); \
52 /* The official name of this program (e.g., no 'g' prefix). */
53 #define PROGRAM_NAME "cp"
56 proper_name_utf8 ("Torbjorn Granlund", "Torbj\303\266rn Granlund"), \
57 proper_name ("David MacKenzie"), \
58 proper_name ("Jim Meyering")
60 /* Used by do_copy, make_dir_parents_private, and re_protect
61 to keep a list of leading directories whose protections
62 need to be fixed after copying. */
68 struct dir_attr *next;
71 /* For long options that have no equivalent short option, use a
72 non-character as a pseudo short option, starting with CHAR_MAX + 1. */
75 ATTRIBUTES_ONLY_OPTION = CHAR_MAX + 1,
77 NO_PRESERVE_ATTRIBUTES_OPTION,
79 PRESERVE_ATTRIBUTES_OPTION,
82 STRIP_TRAILING_SLASHES_OPTION,
83 UNLINK_DEST_BEFORE_OPENING
86 /* True if the kernel is SELinux enabled. */
87 static bool selinux_enabled;
89 /* If true, the command "cp x/e_file e_dir" uses "e_dir/x/e_file"
90 as its destination instead of the usual "e_dir/e_file." */
91 static bool parents_option = false;
93 /* Remove any trailing slashes from each SOURCE argument. */
94 static bool remove_trailing_slashes;
96 static char const *const sparse_type_string[] =
98 "never", "auto", "always", NULL
100 static enum Sparse_type const sparse_type[] =
102 SPARSE_NEVER, SPARSE_AUTO, SPARSE_ALWAYS
104 ARGMATCH_VERIFY (sparse_type_string, sparse_type);
106 static char const *const reflink_type_string[] =
108 "auto", "always", NULL
110 static enum Reflink_type const reflink_type[] =
112 REFLINK_AUTO, REFLINK_ALWAYS
114 ARGMATCH_VERIFY (reflink_type_string, reflink_type);
116 static struct option const long_opts[] =
118 {"archive", no_argument, NULL, 'a'},
119 {"attributes-only", no_argument, NULL, ATTRIBUTES_ONLY_OPTION},
120 {"backup", optional_argument, NULL, 'b'},
121 {"copy-contents", no_argument, NULL, COPY_CONTENTS_OPTION},
122 {"dereference", no_argument, NULL, 'L'},
123 {"force", no_argument, NULL, 'f'},
124 {"interactive", no_argument, NULL, 'i'},
125 {"link", no_argument, NULL, 'l'},
126 {"no-clobber", no_argument, NULL, 'n'},
127 {"no-dereference", no_argument, NULL, 'P'},
128 {"no-preserve", required_argument, NULL, NO_PRESERVE_ATTRIBUTES_OPTION},
129 {"no-target-directory", no_argument, NULL, 'T'},
130 {"one-file-system", no_argument, NULL, 'x'},
131 {"parents", no_argument, NULL, PARENTS_OPTION},
132 {"path", no_argument, NULL, PARENTS_OPTION}, /* Deprecated. */
133 {"preserve", optional_argument, NULL, PRESERVE_ATTRIBUTES_OPTION},
134 {"recursive", no_argument, NULL, 'R'},
135 {"remove-destination", no_argument, NULL, UNLINK_DEST_BEFORE_OPENING},
136 {"sparse", required_argument, NULL, SPARSE_OPTION},
137 {"reflink", optional_argument, NULL, REFLINK_OPTION},
138 {"strip-trailing-slashes", no_argument, NULL, STRIP_TRAILING_SLASHES_OPTION},
139 {"suffix", required_argument, NULL, 'S'},
140 {"symbolic-link", no_argument, NULL, 's'},
141 {"target-directory", required_argument, NULL, 't'},
142 {"update", no_argument, NULL, 'u'},
143 {"verbose", no_argument, NULL, 'v'},
144 {GETOPT_HELP_OPTION_DECL},
145 {GETOPT_VERSION_OPTION_DECL},
152 if (status != EXIT_SUCCESS)
157 Usage: %s [OPTION]... [-T] SOURCE DEST\n\
158 or: %s [OPTION]... SOURCE... DIRECTORY\n\
159 or: %s [OPTION]... -t DIRECTORY SOURCE...\n\
161 program_name, program_name, program_name);
163 Copy SOURCE to DEST, or multiple SOURCE(s) to DIRECTORY.\n\
166 emit_mandatory_arg_note ();
169 -a, --archive same as -dR --preserve=all\n\
170 --attributes-only don't copy the file data, just the attributes\n\
171 --backup[=CONTROL] make a backup of each existing destination file\
173 -b like --backup but does not accept an argument\n\
174 --copy-contents copy contents of special files when recursive\n\
175 -d same as --no-dereference --preserve=links\n\
178 -f, --force if an existing destination file cannot be\n\
179 opened, remove it and try again (this option\n\
180 is ignored when the -n option is also used)\n\
181 -i, --interactive prompt before overwrite (overrides a previous -n\
184 -H follow command-line symbolic links in SOURCE\n\
187 -l, --link hard link files instead of copying\n\
188 -L, --dereference always follow symbolic links in SOURCE\n\
191 -n, --no-clobber do not overwrite an existing file (overrides\n\
192 a previous -i option)\n\
193 -P, --no-dereference never follow symbolic links in SOURCE\n\
196 -p same as --preserve=mode,ownership,timestamps\n\
197 --preserve[=ATTR_LIST] preserve the specified attributes (default:\n\
198 mode,ownership,timestamps), if possible\n\
199 additional attributes: context, links, xattr,\
204 --no-preserve=ATTR_LIST don't preserve the specified attributes\n\
205 --parents use full source file name under DIRECTORY\n\
208 -R, -r, --recursive copy directories recursively\n\
209 --reflink[=WHEN] control clone/CoW copies. See below\n\
210 --remove-destination remove each existing destination file before\n\
211 attempting to open it (contrast with --force)\
214 --sparse=WHEN control creation of sparse files. See below\n\
215 --strip-trailing-slashes remove any trailing slashes from each SOURCE\n\
219 -s, --symbolic-link make symbolic links instead of copying\n\
220 -S, --suffix=SUFFIX override the usual backup suffix\n\
221 -t, --target-directory=DIRECTORY copy all SOURCE arguments into DIRECTORY\n\
222 -T, --no-target-directory treat DEST as a normal file\n\
225 -u, --update copy only when the SOURCE file is newer\n\
226 than the destination file or when the\n\
227 destination file is missing\n\
228 -v, --verbose explain what is being done\n\
229 -x, --one-file-system stay on this file system\n\
231 fputs (HELP_OPTION_DESCRIPTION, stdout);
232 fputs (VERSION_OPTION_DESCRIPTION, stdout);
235 By default, sparse SOURCE files are detected by a crude heuristic and the\n\
236 corresponding DEST file is made sparse as well. That is the behavior\n\
237 selected by --sparse=auto. Specify --sparse=always to create a sparse DEST\n\
238 file whenever the SOURCE file contains a long enough sequence of zero bytes.\n\
239 Use --sparse=never to inhibit creation of sparse files.\n\
241 When --reflink[=always] is specified, perform a lightweight copy, where the\n\
242 data blocks are copied only when modified. If this is not possible the copy\n\
243 fails, or if --reflink=auto is specified, fall back to a standard copy.\n\
247 The backup suffix is '~', unless set with --suffix or SIMPLE_BACKUP_SUFFIX.\n\
248 The version control method may be selected via the --backup option or through\n\
249 the VERSION_CONTROL environment variable. Here are the values:\n\
253 none, off never make backups (even if --backup is given)\n\
254 numbered, t make numbered backups\n\
255 existing, nil numbered if numbered backups exist, simple otherwise\n\
256 simple, never always make simple backups\n\
260 As a special case, cp makes a backup of SOURCE when the force and backup\n\
261 options are given and SOURCE and DEST are the same name for an existing,\n\
264 emit_ancillary_info ();
269 /* Ensure that the parent directories of CONST_DST_NAME have the
270 correct protections, for the --parents option. This is done
271 after all copying has been completed, to allow permissions
272 that don't include user write/execute.
274 SRC_OFFSET is the index in CONST_DST_NAME of the beginning of the
275 source directory name.
277 ATTR_LIST is a null-terminated linked list of structures that
278 indicates the end of the filename of each intermediate directory
279 in CONST_DST_NAME that may need to have its attributes changed.
280 The command 'cp --parents --preserve a/b/c d/e_dir' changes the
281 attributes of the directories d/e_dir/a and d/e_dir/a/b to match
282 the corresponding source directories regardless of whether they
283 existed before the 'cp' command was given.
285 Return true if the parent of CONST_DST_NAME and any intermediate
286 directories specified by ATTR_LIST have the proper permissions
290 re_protect (char const *const_dst_name, size_t src_offset,
291 struct dir_attr *attr_list, const struct cp_options *x)
294 char *dst_name; /* A copy of CONST_DST_NAME we can change. */
295 char *src_name; /* The source name in 'dst_name'. */
297 ASSIGN_STRDUPA (dst_name, const_dst_name);
298 src_name = dst_name + src_offset;
300 for (p = attr_list; p; p = p->next)
302 dst_name[p->slash_offset] = '\0';
304 /* Adjust the times (and if possible, ownership) for the copy.
305 chown turns off set[ug]id bits for non-root,
306 so do the chmod last. */
308 if (x->preserve_timestamps)
310 struct timespec timespec[2];
312 timespec[0] = get_stat_atime (&p->st);
313 timespec[1] = get_stat_mtime (&p->st);
315 if (utimens (dst_name, timespec))
317 error (0, errno, _("failed to preserve times for %s"),
323 if (x->preserve_ownership)
325 if (lchown (dst_name, p->st.st_uid, p->st.st_gid) != 0)
327 if (! chown_failure_ok (x))
329 error (0, errno, _("failed to preserve ownership for %s"),
333 /* Failing to preserve ownership is OK. Still, try to preserve
334 the group, but ignore the possible error. */
335 ignore_value (lchown (dst_name, -1, p->st.st_gid));
339 if (x->preserve_mode)
341 if (copy_acl (src_name, -1, dst_name, -1, p->st.st_mode) != 0)
344 else if (p->restore_mode)
346 if (lchmod (dst_name, p->st.st_mode) != 0)
348 error (0, errno, _("failed to preserve permissions for %s"),
354 dst_name[p->slash_offset] = '/';
359 /* Ensure that the parent directory of CONST_DIR exists, for
360 the --parents option.
362 SRC_OFFSET is the index in CONST_DIR (which is a destination
363 directory) of the beginning of the source directory name.
364 Create any leading directories that don't already exist.
365 If VERBOSE_FMT_STRING is nonzero, use it as a printf format
366 string for printing a message after successfully making a directory.
367 The format should take two string arguments: the names of the
368 source and destination directories.
369 Creates a linked list of attributes of intermediate directories,
370 *ATTR_LIST, for re_protect to use after calling copy.
371 Sets *NEW_DST if this function creates parent of CONST_DIR.
373 Return true if parent of CONST_DIR exists as a directory with the proper
374 permissions when done. */
376 /* FIXME: Synch this function with the one in ../lib/mkdir-p.c. */
379 make_dir_parents_private (char const *const_dir, size_t src_offset,
380 char const *verbose_fmt_string,
381 struct dir_attr **attr_list, bool *new_dst,
382 const struct cp_options *x)
385 char *dir; /* A copy of CONST_DIR we can change. */
386 char *src; /* Source name in DIR. */
387 char *dst_dir; /* Leading directory of DIR. */
388 size_t dirlen; /* Length of DIR. */
390 ASSIGN_STRDUPA (dir, const_dir);
392 src = dir + src_offset;
394 dirlen = dir_len (dir);
395 dst_dir = alloca (dirlen + 1);
396 memcpy (dst_dir, dir, dirlen);
397 dst_dir[dirlen] = '\0';
401 if (stat (dst_dir, &stats) != 0)
403 /* A parent of CONST_DIR does not exist.
404 Make all missing intermediate directories. */
408 while (*slash == '/')
410 while ((slash = strchr (slash, '/')))
412 struct dir_attr *new IF_LINT ( = NULL);
416 missing_dir = (stat (dir, &stats) != 0);
418 if (missing_dir || x->preserve_ownership || x->preserve_mode
419 || x->preserve_timestamps)
421 /* Add this directory to the list of directories whose
422 modes might need fixing later. */
424 int src_errno = (stat (src, &src_st) != 0
426 : S_ISDIR (src_st.st_mode)
431 error (0, src_errno, _("failed to get attributes of %s"),
436 new = xmalloc (sizeof *new);
438 new->slash_offset = slash - dir;
439 new->restore_mode = false;
440 new->next = *attr_list;
447 mode_t omitted_permissions;
450 /* This component does not exist. We must set
451 *new_dst and new->st.st_mode inside this loop because,
452 for example, in the command 'cp --parents ../a/../b/c e_dir',
453 make_dir_parents_private creates only e_dir/../a if
454 ./b already exists. */
456 src_mode = new->st.st_mode;
458 /* If the ownership or special mode bits might change,
459 omit some permissions at first, so unauthorized users
460 cannot nip in before the file is ready. */
461 omitted_permissions = (src_mode
462 & (x->preserve_ownership
468 /* POSIX says mkdir's behavior is implementation-defined when
469 (src_mode & ~S_IRWXUGO) != 0. However, common practice is
470 to ask mkdir to copy all the CHMOD_MODE_BITS, letting mkdir
471 decide what to do with S_ISUID | S_ISGID | S_ISVTX. */
472 mkdir_mode = src_mode & CHMOD_MODE_BITS & ~omitted_permissions;
473 if (mkdir (dir, mkdir_mode) != 0)
475 error (0, errno, _("cannot make directory %s"),
481 if (verbose_fmt_string != NULL)
482 printf (verbose_fmt_string, src, dir);
485 /* We need search and write permissions to the new directory
486 for writing the directory's contents. Check if these
487 permissions are there. */
489 if (lstat (dir, &stats))
491 error (0, errno, _("failed to get attributes of %s"),
497 if (! x->preserve_mode)
499 if (omitted_permissions & ~stats.st_mode)
500 omitted_permissions &= ~ cached_umask ();
501 if (omitted_permissions & ~stats.st_mode
502 || (stats.st_mode & S_IRWXU) != S_IRWXU)
504 new->st.st_mode = stats.st_mode | omitted_permissions;
505 new->restore_mode = true;
509 if ((stats.st_mode & S_IRWXU) != S_IRWXU)
511 /* Make the new directory searchable and writable.
512 The original permissions will be restored later. */
514 if (lchmod (dir, stats.st_mode | S_IRWXU) != 0)
516 error (0, errno, _("setting permissions for %s"),
522 else if (!S_ISDIR (stats.st_mode))
524 error (0, 0, _("%s exists but is not a directory"),
532 /* Avoid unnecessary calls to 'stat' when given
533 file names containing multiple adjacent slashes. */
534 while (*slash == '/')
539 /* We get here if the parent of DIR already exists. */
541 else if (!S_ISDIR (stats.st_mode))
543 error (0, 0, _("%s exists but is not a directory"), quote (dst_dir));
553 /* FILE is the last operand of this command.
554 Return true if FILE is a directory.
555 But report an error and exit if there is a problem accessing FILE,
556 or if FILE does not exist but would have to refer to an existing
557 directory if it referred to anything at all.
559 If the file exists, store the file's status into *ST.
560 Otherwise, set *NEW_DST. */
563 target_directory_operand (char const *file, struct stat *st, bool *new_dst)
565 int err = (stat (file, st) == 0 ? 0 : errno);
566 bool is_a_dir = !err && S_ISDIR (st->st_mode);
570 error (EXIT_FAILURE, err, _("accessing %s"), quote (file));
576 /* Scan the arguments, and copy each by calling copy.
577 Return true if successful. */
580 do_copy (int n_files, char **file, const char *target_directory,
581 bool no_target_directory, struct cp_options *x)
584 bool new_dst = false;
587 if (n_files <= !target_directory)
590 error (0, 0, _("missing file operand"));
592 error (0, 0, _("missing destination file operand after %s"),
594 usage (EXIT_FAILURE);
597 if (no_target_directory)
599 if (target_directory)
600 error (EXIT_FAILURE, 0,
601 _("cannot combine --target-directory (-t) "
602 "and --no-target-directory (-T)"));
605 error (0, 0, _("extra operand %s"), quote (file[2]));
606 usage (EXIT_FAILURE);
608 /* Update NEW_DST and SB, which may be checked below. */
609 ignore_value (target_directory_operand (file[n_files -1], &sb, &new_dst));
611 else if (!target_directory)
614 && target_directory_operand (file[n_files - 1], &sb, &new_dst))
615 target_directory = file[--n_files];
616 else if (2 < n_files)
617 error (EXIT_FAILURE, 0, _("target %s is not a directory"),
618 quote (file[n_files - 1]));
621 if (target_directory)
623 /* cp file1...filen edir
624 Copy the files 'file1' through 'filen'
625 to the existing directory 'edir'. */
628 /* Initialize these hash tables only if we'll need them.
629 The problems they're used to detect can arise only if
630 there are two or more files to copy. */
637 for (i = 0; i < n_files; i++)
640 bool parent_exists = true; /* True if dir_name (dst_name) exists. */
641 struct dir_attr *attr_list;
642 char *arg_in_concat = NULL;
645 /* Trailing slashes are meaningful (i.e., maybe worth preserving)
646 only in the source file names. */
647 if (remove_trailing_slashes)
648 strip_trailing_slashes (arg);
652 char *arg_no_trailing_slash;
654 /* Use 'arg' without trailing slashes in constructing destination
655 file names. Otherwise, we can end up trying to create a
656 directory via 'mkdir ("dst/foo/"...', which is not portable.
657 It fails, due to the trailing slash, on at least
658 NetBSD 1.[34] systems. */
659 ASSIGN_STRDUPA (arg_no_trailing_slash, arg);
660 strip_trailing_slashes (arg_no_trailing_slash);
662 /* Append all of 'arg' (minus any trailing slash) to 'dest'. */
663 dst_name = file_name_concat (target_directory,
664 arg_no_trailing_slash,
667 /* For --parents, we have to make sure that the directory
668 dir_name (dst_name) exists. We may have to create a few
669 leading directories. */
671 (make_dir_parents_private
672 (dst_name, arg_in_concat - dst_name,
673 (x->verbose ? "%s -> %s\n" : NULL),
674 &attr_list, &new_dst, x));
679 /* Append the last component of 'arg' to 'target_directory'. */
681 ASSIGN_BASENAME_STRDUPA (arg_base, arg);
682 /* For 'cp -R source/.. dest', don't copy into 'dest/..'. */
683 dst_name = (STREQ (arg_base, "..")
684 ? xstrdup (target_directory)
685 : file_name_concat (target_directory, arg_base,
691 /* make_dir_parents_private failed, so don't even
698 ok &= copy (arg, dst_name, new_dst, x, ©_into_self, NULL);
701 ok &= re_protect (dst_name, arg_in_concat - dst_name,
709 struct dir_attr *p = attr_list;
710 attr_list = attr_list->next;
718 else /* !target_directory */
720 char const *new_dest;
721 char const *source = file[0];
722 char const *dest = file[1];
728 _("with --parents, the destination must be a directory"));
729 usage (EXIT_FAILURE);
732 /* When the force and backup options have been specified and
733 the source and destination are the same name for an existing
734 regular file, convert the user's command, e.g.,
735 'cp --force --backup foo foo' to 'cp --force foo fooSUFFIX'
736 where SUFFIX is determined by any version control options used. */
738 if (x->unlink_dest_after_failed_open
739 && x->backup_type != no_backups
740 && STREQ (source, dest)
741 && !new_dst && S_ISREG (sb.st_mode))
743 static struct cp_options x_tmp;
745 new_dest = find_backup_file_name (dest, x->backup_type);
746 /* Set x->backup_type to 'no_backups' so that the normal backup
747 mechanism is not used when performing the actual copy.
748 backup_type must be set to 'no_backups' only *after* the above
749 call to find_backup_file_name -- that function uses
750 backup_type to determine the suffix it applies. */
752 x_tmp.backup_type = no_backups;
760 ok = copy (source, new_dest, 0, x, &unused, NULL);
767 cp_option_init (struct cp_options *x)
769 cp_options_default (x);
770 x->copy_as_regular = true;
771 x->dereference = DEREF_UNDEFINED;
772 x->unlink_dest_before_opening = false;
773 x->unlink_dest_after_failed_open = false;
774 x->hard_link = false;
775 x->interactive = I_UNSPECIFIED;
776 x->move_mode = false;
777 x->one_file_system = false;
778 x->reflink_mode = REFLINK_NEVER;
780 x->preserve_ownership = false;
781 x->preserve_links = false;
782 x->preserve_mode = false;
783 x->preserve_timestamps = false;
784 x->explicit_no_preserve_mode = false;
785 x->preserve_security_context = false;
786 x->require_preserve_context = false;
787 x->preserve_xattr = false;
788 x->reduce_diagnostics = false;
789 x->require_preserve_xattr = false;
791 x->data_copy_required = true;
792 x->require_preserve = false;
793 x->recursive = false;
794 x->sparse_mode = SPARSE_AUTO;
795 x->symbolic_link = false;
800 x->stdin_tty = false;
805 /* By default, refuse to open a dangling destination symlink, because
806 in general one cannot do that safely, give the current semantics of
807 open's O_EXCL flag, (which POSIX doesn't even allow cp to use, btw).
808 But POSIX requires it. */
809 x->open_dangling_dest_symlink = getenv ("POSIXLY_CORRECT") != NULL;
815 /* Given a string, ARG, containing a comma-separated list of arguments
816 to the --preserve option, set the appropriate fields of X to ON_OFF. */
818 decode_preserve_arg (char const *arg, struct cp_options *x, bool on_off)
830 static enum File_attribute const preserve_vals[] =
832 PRESERVE_MODE, PRESERVE_TIMESTAMPS,
833 PRESERVE_OWNERSHIP, PRESERVE_LINK, PRESERVE_CONTEXT, PRESERVE_XATTR,
836 /* Valid arguments to the '--preserve' option. */
837 static char const* const preserve_args[] =
839 "mode", "timestamps",
840 "ownership", "links", "context", "xattr", "all", NULL
842 ARGMATCH_VERIFY (preserve_args, preserve_vals);
844 char *arg_writable = xstrdup (arg);
845 char *s = arg_writable;
848 /* find next comma */
849 char *comma = strchr (s, ',');
850 enum File_attribute val;
852 /* If we found a comma, put a NUL in its place and advance. */
857 val = XARGMATCH ("--preserve", s, preserve_args, preserve_vals);
861 x->preserve_mode = on_off;
862 x->explicit_no_preserve_mode = !on_off;
865 case PRESERVE_TIMESTAMPS:
866 x->preserve_timestamps = on_off;
869 case PRESERVE_OWNERSHIP:
870 x->preserve_ownership = on_off;
874 x->preserve_links = on_off;
877 case PRESERVE_CONTEXT:
878 x->preserve_security_context = on_off;
879 x->require_preserve_context = on_off;
883 x->preserve_xattr = on_off;
884 x->require_preserve_xattr = on_off;
888 x->preserve_mode = on_off;
889 x->preserve_timestamps = on_off;
890 x->preserve_ownership = on_off;
891 x->preserve_links = on_off;
892 x->explicit_no_preserve_mode = !on_off;
894 x->preserve_security_context = on_off;
895 x->preserve_xattr = on_off;
909 main (int argc, char **argv)
913 bool make_backups = false;
914 char *backup_suffix_string;
915 char *version_control_string = NULL;
917 bool copy_contents = false;
918 char *target_directory = NULL;
919 bool no_target_directory = false;
921 initialize_main (&argc, &argv);
922 set_program_name (argv[0]);
923 setlocale (LC_ALL, "");
924 bindtextdomain (PACKAGE, LOCALEDIR);
925 textdomain (PACKAGE);
927 atexit (close_stdin);
929 selinux_enabled = (0 < is_selinux_enabled ());
932 /* FIXME: consider not calling getenv for SIMPLE_BACKUP_SUFFIX unless
933 we'll actually use backup_suffix_string. */
934 backup_suffix_string = getenv ("SIMPLE_BACKUP_SUFFIX");
936 while ((c = getopt_long (argc, argv, "abdfHilLnprst:uvxPRS:T",
943 x.sparse_mode = XARGMATCH ("--sparse", optarg,
944 sparse_type_string, sparse_type);
949 x.reflink_mode = REFLINK_ALWAYS;
951 x.reflink_mode = XARGMATCH ("--reflink", optarg,
952 reflink_type_string, reflink_type);
956 /* Like -dR --preserve=all with reduced failure diagnostics. */
957 x.dereference = DEREF_NEVER;
958 x.preserve_links = true;
959 x.preserve_ownership = true;
960 x.preserve_mode = true;
961 x.preserve_timestamps = true;
962 x.require_preserve = true;
964 x.preserve_security_context = true;
965 x.preserve_xattr = true;
966 x.reduce_diagnostics = true;
973 version_control_string = optarg;
976 case ATTRIBUTES_ONLY_OPTION:
977 x.data_copy_required = false;
980 case COPY_CONTENTS_OPTION:
981 copy_contents = true;
985 x.preserve_links = true;
986 x.dereference = DEREF_NEVER;
990 x.unlink_dest_after_failed_open = true;
994 x.dereference = DEREF_COMMAND_LINE_ARGUMENTS;
998 x.interactive = I_ASK_USER;
1006 x.dereference = DEREF_ALWAYS;
1010 x.interactive = I_ALWAYS_NO;
1014 x.dereference = DEREF_NEVER;
1017 case NO_PRESERVE_ATTRIBUTES_OPTION:
1018 decode_preserve_arg (optarg, &x, false);
1021 case PRESERVE_ATTRIBUTES_OPTION:
1024 /* Fall through to the case for 'p' below. */
1028 decode_preserve_arg (optarg, &x, true);
1029 x.require_preserve = true;
1034 x.preserve_ownership = true;
1035 x.preserve_mode = true;
1036 x.preserve_timestamps = true;
1037 x.require_preserve = true;
1040 case PARENTS_OPTION:
1041 parents_option = true;
1049 case UNLINK_DEST_BEFORE_OPENING:
1050 x.unlink_dest_before_opening = true;
1053 case STRIP_TRAILING_SLASHES_OPTION:
1054 remove_trailing_slashes = true;
1058 x.symbolic_link = true;
1062 if (target_directory)
1063 error (EXIT_FAILURE, 0,
1064 _("multiple target directories specified"));
1068 if (stat (optarg, &st) != 0)
1069 error (EXIT_FAILURE, errno, _("accessing %s"), quote (optarg));
1070 if (! S_ISDIR (st.st_mode))
1071 error (EXIT_FAILURE, 0, _("target %s is not a directory"),
1074 target_directory = optarg;
1078 no_target_directory = true;
1090 x.one_file_system = true;
1094 make_backups = true;
1095 backup_suffix_string = optarg;
1098 case_GETOPT_HELP_CHAR;
1100 case_GETOPT_VERSION_CHAR (PROGRAM_NAME, AUTHORS);
1103 usage (EXIT_FAILURE);
1107 if (x.hard_link && x.symbolic_link)
1109 error (0, 0, _("cannot make both hard and symbolic links"));
1110 usage (EXIT_FAILURE);
1113 if (make_backups && x.interactive == I_ALWAYS_NO)
1116 _("options --backup and --no-clobber are mutually exclusive"));
1117 usage (EXIT_FAILURE);
1120 if (x.reflink_mode == REFLINK_ALWAYS && x.sparse_mode != SPARSE_AUTO)
1122 error (0, 0, _("--reflink can be used only with --sparse=auto"));
1123 usage (EXIT_FAILURE);
1126 if (backup_suffix_string)
1127 simple_backup_suffix = xstrdup (backup_suffix_string);
1129 x.backup_type = (make_backups
1130 ? xget_version (_("backup type"),
1131 version_control_string)
1134 if (x.dereference == DEREF_UNDEFINED)
1137 /* This is compatible with FreeBSD. */
1138 x.dereference = DEREF_NEVER;
1140 x.dereference = DEREF_ALWAYS;
1144 x.copy_as_regular = copy_contents;
1146 /* If --force (-f) was specified and we're in link-creation mode,
1147 first remove any existing destination file. */
1148 if (x.unlink_dest_after_failed_open && (x.hard_link || x.symbolic_link))
1149 x.unlink_dest_before_opening = true;
1151 if (x.preserve_security_context)
1153 if (!selinux_enabled)
1154 error (EXIT_FAILURE, 0,
1155 _("cannot preserve security context "
1156 "without an SELinux-enabled kernel"));
1160 if (x.require_preserve_xattr)
1161 error (EXIT_FAILURE, 0, _("cannot preserve extended attributes, cp is "
1162 "built without xattr support"));
1165 /* Allocate space for remembering copied and created files. */
1169 ok = do_copy (argc - optind, argv + optind,
1170 target_directory, no_target_directory, &x);
1174 exit (ok ? EXIT_SUCCESS : EXIT_FAILURE);